Compressed texture format for target build platform.
Additional resources: EditorUserBuildSettings.androidBuildSubtarget.
| Generic | Don't override texture compression. |
| DXT | S3 texture compression. Supported on devices with NVidia Tegra, Vivante and Intel GPUs. |
| ETC | ETC1 texture compression (or ETC2 for textures with alpha). ETC1 is supported by all devices. ETC2 is available on devices which support OpenGL ES 3.0. |
| ETC2 | ETC2 texture compression. Available on devices which support OpenGL ES 3.0. |
| ASTC | ASTC texture compression. |